用matlab迭代法求解非线性方程组。未知数为:a、b、c、e、f、g
a-20.6301*c+20.6301*c*b+20.6301*g*b+6.0839=0
b+0.678213*c-0.678213*b*c-0.678213*b*f-0.40431=0
c-b*c-b*g=0
e-20.6301*g+20.6301*g*f+20.6301*f*c+14.3161=0
f+0.678213*g-0.678213*g*f-0.678213*c*f-0.5122=0
g-f*g-f*c=0
其中b、c、f、g都是介于(0,1)间